听力原文：M: Sally, here is a letter for us. It's from T0m.
W: Can you read it please? My hands are wet with all this washing.
M: Well, OK.
'Dear Sally and John,
Thanks for your letter, It was good to hear from you. Just a short note in reply. I was happy to hear that you two would be in town in January. I think that's the first time you will come to visit us after your marriage. Please do call me when you arrive so that I can pick you up at the station and then we may have dinner together in town. In case you don't have my phone number, it's 780-7842. I look forward to meeting you soon.
Yours,
Tom'
What is Sally doing?
A．Reading a letter.
B．Washing clothes.
C．Making a phone call.

未分类题1996年，加拿大安大略省以本省境内销售的可回收的不可重复利用的易拉罐装啤酒包装不利于环保为由

未分类题听力原文：M: Mary, will you come over for tea at three today?W: I'm sorry, I won't be able to, I'll be out of town.What will Mary do?A．She will be out of town.B．She will drink tea with the man.C．She will stay at home.

单项选择题同时属于不变资本和固定资本的生产资料是( )。 A．设备 B．原料 C．燃料 D．辅助材料

未分类题Explorer of the Extreme DeepOceans cover more than two-thirds of our planet. Yet, just a small fraction of the underwater world has been explored. Now, Scientists at the Woods Hole Oceanographic Institution (WHOI) in Massachusetts are building an underwater vehicle that will carry explorers as deep as 6,500 meters (21,320 feet). The new machine, known as a manned submersible or human-operated vehicle (HOV), will replace another one named Alvin which has an amazing record of discovery, playing a key role in various important and famous undersea expeditions. Alvin has been operating for 40 years but can go down only 4,500 meters (14,784 feet). It's about time for an upgrade, WHOI researchers say.Alvin was launched in 1964. Since then, Alvin has worked between 200 and 250 days a year, says Daniel Fornari, a marine geologist and director of the Deep Ocean Exploration Institute at WHOI. During its lifetime, Alvin has carried some 12,000 people on a total of more than 3,000 dives. A newer, better versions of Alvin is bound to reveal even more surprises about a world that is still full of mysteries, Fornari says. It might also make the job of exploration a little easier. 'We take so much for granted on land,' Fomari says. 'We can walk around and see with our eyes how big things are. We can see colors, special arrangements.'Size-wise, the new HOV will be similar to Alvin. It'll be about 37 feet long. The setting area inside will be a small sphere, about 8 feet wide, like Alvin, it'll carry a pilot and two passengers. It will be just as maneuverable. In most other ways, it will give passengers more opportunities to enjoy the view, for one thing. Alvin has only three windows, the new vehicle will have five, with more overlap so that the passengers and the pilot can see the same thing.Alvin can go up and down at a rate of 30 meters every second, and its maximum speed is 2 knots ( about 2.3 miles per hour), while the new vehicle will be able to ascend and descend at 44 meters per second. It'll reach speeds of 3 knots, or 3.5 miles per hour.What is Alvin?A．A research institute.B．A transporting vehicle.C．A submersible.D．A scientist.

单项选择题W—G—W…P…W是( )。 A．货币资本循环公式 B．生产资本循环公式 C．商品资本循环公式 D．商业资本循环公式